Home / 20,679.21-28,514.50-14,294.71

Finding the Fourth Proportional to 20,679.21, 28,514.50 and 14,294.71

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Solution

The fourth proportional to 20,679.21, 28,514.50 and 14,294.71 is: 19,710.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.21 : 28,514.50 = 14,294.71 : x
  2. Step 2: Convert to fraction form
    20,679.21/28,514.50 = 14,294.71/x
  3. Step 3: Cross multiply
    20,679.21x = 28,514.50 × 14,294.71
  4. Step 4: Simplify right side
    20,679.21x = 407,606,508.30
  5. Step 5: Solve for x
    x = 407,606,508.30/20,679.21
  6. Step 6: Final answer
    x = 19,710.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.